Electhophoretic charging method and apparatus



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16. 1969. 869 O.G. 687. The abstracts 01. Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 29, 1970 T878,019 ELECTROPHORETIC CHARGING METHOD AND APPARATUS William E. Hunt, 901 Elmgrove Road, Rochester, N.Y. 14650 Filed Feb. 6, 1970, Ser. No. 9,382 Int. Cl. B01]: 5/00 US. Cl. 204181 1 Sheet Drawing. 7 Pages Specification Electrophoretic charging of a photoconductive member 2 is accomplished by applying a potential from source 32 between a conductive backing 6 on the photoconductive member and an electrode 24 spaced therefrom which acts upon charged transparent particles 14 dispersed in a dielectric liquid 12 therebetween. The field which is created between the photoconductive member and the electrode causes the charged particles to be uniformly distributed across the photoconductive surface 4 which surface may then be subjected to further electrophotographic procedures.

Sept. 29, 1970 w. E. HUNT ELECTROPHORETIC CHARGING METHOD AND APPARATUS Filed Feb. 6, 1970 J m i 1 IT. 7 .Y 7 m u M m i WILLIAM E. HUNT A w WMQM ATTORNEYS 

